Malaya British Borneo 1961 10 Cents Coin With Strike Through Errors.
This Queen Elizabeth II 1961 10 Cents coin was struck with imperfection.
On the first glance, my Sifu and I thought that it is a weak strikes or a worn die strikes.
After a more details viewed,we found out that it should be Strike Through Error.
And most likely, it was a struck through grease error.
On the obverse, they were signs of detail elements on the dies were filled up by grease.